A soap bubble’s swan song is a quiet “pfttt.” Put your ear next to a soap bubble, and you might hear a high-pitched sound as it bursts. Now, scientists have characterized that sound using an array of ...

A quiet revolution is taking shape in the world of physics, and it doesn’t rely on exotic particles or massive particle colliders. Instead, it begins with something much more familiar—sound.

Sound has a speed limit. Under normal circumstances, its waves can travel no faster than about 36 kilometers per second, physicists propose October 9 in Science Advances. Sound zips along at different ...